TG113 Loudspeaker Bluetooth Wireless Speakers Subwoofers Handsfree Call Profile Stereo Bass bass Support TF USB Card AUX Line In Hi-Fi Loud

wireless bluetooth speaker, with retail package, Please choose the color when you place the order,or we will send mix color to you ,Package: 1x Bluetooth Speaker 1x charge Cable 1x 3.5mm Audio Cable 1x User manual,The pairing link of Bluetooth 4.2 is encrypted using the Diffie-Hellman Key Exchange key exchange algorithm. Each device has a pair of key pairs, a public key and a private key. The private key is stored by itself, and the public key is disclosed to the other party.,1. Transmission rate, the transmission rate of Bluetooth 5.0 is twice that of 4.2.